• Effective Sun Protection: our solar cooling hat is designed with 2 fans on the sides of the hat with Mesh Net. • 2 Charging Methods: built-in two 800 mAh battery, the fan of our solar fan hat comes with the USB port, so you just need to wait about 2 hours to fully charge it, and it can be applied for 8-16 hours. • Comfortable Material: hat with fan is mainly made of nylon, soft and breathable, easy to absorb sweat and dissipate heat. • Considerate Design: the fan of the solar hat is designed with 7 PVC soft fan blades and fan protection cover, with large air volume, which can ensure your safety and adjust the wind direction freely. • Wide Applicable Occasion: fan hats for men can be worn in your daily life, and also suitable for many outdoor activities. • One Size Fit Men & Women.